WELL · 42-507-32875 · DISTRICT 1
Lang #1H
Zavala County · Pearsall (Buda S.) field · Producing · Horizontal
Lang #1H (API 42-507-32875) is a horizontal well in Zavala County operated by Mueller Exploration Inc., completed June 20, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued March 14, 2012, permitted to 13,200 ft.
It was permitted by U.S. Enercorp, Ltd. and has since transferred to Mueller Exploration Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Austin Chalk, Eagle Ford, Buda.
Its lease has reported 15.3K barrels of oil and 44.3K mcf of gas since June 2012, last reporting in July 2026.
Operator of record
Permitted by U.S. Enercorp, Ltd.; the EWA schedule now lists a different operator.
Humble, TX · P-5 Y, filed May 4, 2026 · 95 permits on file · (361) 946-2581
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mueller Exploration Inc. |
| Production reports | Mueller Exploration, Inc.through Apr 2026 |
| Latest permit | U.S. Enercorp, Ltd.Mar 14, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,200
- total depth, ft
- 2
- permits on file
- Mar 14, 2012
- last permit issued
- Jun 20, 2012
- completed
- 15.3K
- cumulative oil, bbl
- 44.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 20, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Lang O-1-17442 | Pearsall (Buda, S.) | Mueller Exploration, Inc. | 1 | 15.3K | 44.3K | Jun 2012 – Jul 2026 |
Oil, barrels lease total
Last 12 months 650 · prior 12 924(-30%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1U.S. Enercorp, Ltd.Aug 2012 → Mar 2016
- 2Mueller Exploration, Inc.Apr 2016 → Apr 2026
- 3Silver Anchor Resources LLCNov 2025 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 735170-98 | Drill | U.S. Enercorp, Ltd. | Sep 12, 2012 | Mar 14, 2012 | Apr 8, 2012 | 7,202 |
| 735170-99 | Drill | Hughes, Dan A. Company, L.P. | Mar 2, 2012 | Mar 14, 2012 | Apr 8, 2012 | 13,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-17442 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 663 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin ChalkTOP OF AUSTIN CHALK | 5,968 | -5,305 |
| Eagle FordTOP OF EAGLEFORD | 6,791 | -6,128 |
| BudaTOP OF BUDA | 7,059 | -6,396 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,285 | 12,892 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 3,082 | 17.5 | 2,345 S |
| 7 | 7,285 | 12.25 | 1,255 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 2, 2014 | Sep 18, 2012 | Yes |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-507-32875 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-32875 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/50732875, documented in the API reference.